The Orioles began Grapefruit League play with their most valuable player from a year ago and one of the leading candidates for the No. 5 starter job sidelined for health-related reasons.

Manager Buck Showalter told reporters in Sarasota that second baseman Jonathan Schoop was scratched from Friday’s opener because of left elbow bursitis. Right-handed pitcher Miguel Castro is dealing with tendinitis in both knees and will not make his scheduled start on Sunday.

Schoop was originally slated to bat second against Tampa Bay before the Orioles released a revised lineup Friday morning with Luis Sardinas taking his place at second base and batting ninth. Showalter said the All-Star selection and 2017 Most Valuable Oriole winner bumped his elbow on something recently, causing it to swell and prompting the training staff to drain it.

The 26-year-old has missed only two games over the last two seasons combined while blossoming into one of the club’s best players.

With Ryan Flaherty now with Philadelphia, Baltimore is looking for a new utility infielder with Sardinas, Ruben Tejada, and Engelb Vielma considered the top candidates for the job.

Castro is trying to transition from long relief to a starting role, making this a concerning disruption to that schedule. The 23-year-old posted a 3.53 ERA in 66 1/3 innings last season and is competing with the likes of right-handers Mike Wright and Gabriel Ynoa and Rule 5 lefty Nestor Cortes for the fifth starter job behind Dylan Bundy, Kevin Gausman, Andrew Cashner, and Chris Tillman in the rotation.